Gassam is a department or commune of Nayala Province in western Burkina Faso. Its capital is the town of Gassam. According to the 2019 census the department has a total population of 44,132.

Towns and villages

• Gassam (6 176 inhabitants) (capital)
• Balanso (493 inhabitants)
• Djimbara (1 900 inhabitants)
• Dièrè (2 342 inhabitants)
• Djin (824 inhabitants)
• Goni (830 inhabitants)
• Korombéré (630 inhabitants)
• Kossé (1 900 inhabitants)
• Koussiba (341 inhabitants)
• Koussidian (881 inhabitants)
• Laraba (1 486 inhabitants)
• Larè (1 086 inhabitants)
• Léry (1 294 inhabitants)
• Lesséré (933 inhabitants)
• Moara-Grand (1 515 inhabitants)
• Moara-Petit (693 inhabitants)
• Soni (734 inhabitants)
• Soroni (694 inhabitants)
• Soro (1 537 inhabitants)
• Téri-Rimaïbé (418 inhabitants)
• Téri-Samo (342 inhabitants)
• Tissi (1 528 inhabitants)
• Toubani (651 inhabitants)
• Warou (633 inhabitants)
• Zaba (2 012 inhabitants)